Did you know that Facebook employs more than 3,000 people? Or that Club Penguin has more folks on its staff roster than Twitter?

The world of social media is complex and growing all the time, with different networks gaining popularity seemingly on a monthly basis. Facebook continues to lead the way, of course, but new players such as Pinterest are making serious waves, and even old hands like Reddit have found a surge of renewed interest.

But how do they all match up?

Some of the data in this infographic from Social Jumpstart is a little out of date – and any suggestion that Tagged is bigger than Twitter should be immediately thrown out of the window – but this is a handy, one-stop overview for anyone new to the world of social media.